CN109935891A - A kind of cobalt acid lithium number lithium ion battery that high/low temperature is taken into account - Google Patents
A kind of cobalt acid lithium number lithium ion battery that high/low temperature is taken into account Download PDFInfo
- Publication number
- CN109935891A CN109935891A CN201910277718.8A CN201910277718A CN109935891A CN 109935891 A CN109935891 A CN 109935891A CN 201910277718 A CN201910277718 A CN 201910277718A CN 109935891 A CN109935891 A CN 109935891A
- Authority
- CN
- China
- Prior art keywords
- account
- ion battery
- lithium ion
- low temperature
- cobalt acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
A kind of cobalt acid lithium number lithium ion battery that high/low temperature is taken into account, belongs to technical field of lithium ion.The purpose of the present invention is to solve the undesirable problems of existing lithium ion battery impedance and high temperature performance, cobalt acid lithium number lithium ion battery of the invention, including lithium cobaltate cathode, high capacity artificial plumbago negative pole and nonaqueous electrolytic solution, the lithium cobaltate cathode is by being mixed with processing；The nonaqueous electrolytic solution is to be dissolved in the organic compound containing in cyclic carbonate and linear carbonate solvent, the organic compound is sultone compounds and more nitrile compounds, and the mass fraction that the sultone compounds account for electrolyte is 3.0%~10%.High-content sulfonates compounds electrolyte will not influence the performance of positive and negative pole material performance, so that lithium ion battery has very excellent high-temperature behavior and cryogenic property.
Description
Technical field
The invention belongs to technical field of lithium ion, and in particular to a kind of cobalt acid lithium number lithium ion that high/low temperature is taken into account
Battery.
Background technique
Lithium ion battery, since its specific energy is high, good cycle, has been widely used in taking down notes since commercialization
The digital domains such as sheet, mobile phone.With the extensive use of lithium ion battery, use environment also tends to diversity, consumer's phase
Lithium ion battery is hoped all to have excellent performance under high/low temperature condition.Such as: in the relatively low area of temperature, notebook also can
It works normally, lithium ion battery is needed to have good low temperature performance.In the relatively high area of temperature, it is expected that high temperature is to lithium
The ion battery service life has not significant impact, it is desirable to which lithium ion battery has good high temperature cyclic performance.
Positive electrode, negative electrode material and electrolyte material in the performance and battery of lithium ion battery is closely bound up.Application
Number for the U.S. Patent Publication of US6033809, a kind of containing 1,3-propane sultone, (mass percent contains in the electrolytic solution for it
Amount≤4%) nonaqueous electrolytic solution, cycle performance of battery can be improved.Application No. is the U.S. Patent Publications of US9742033
Non- water power associated with a kind of 1,3-propane sultone and adiponitrile (two kinds of substances in the electrolytic solution mass percentage content≤3%)
Liquid is solved, cycle performance of lithium ion battery and high-temperature storage performance can be improved.But if sultone compounds and more nitriles
Mass percentage content >=3% of compound in the electrolytic solution will form fine and close SEI film, simultaneously on negative electrode material surface
Can also it become larger in the probability that positive electrode surface is oxidized, to cause lithium ion battery impedance sharply to become larger, so that lithium ion
The low temperature performance decline of battery is obvious.Therefore, it how by positive electrode, negative electrode material and electrolyte synergistic effect, obtains
The digital lithium ion battery taken into account to a kind of high temperature performance is most important.
Summary of the invention
The purpose of the present invention is to solve the undesirable problems of existing lithium ion battery impedance and high temperature performance, mention
For a kind of cobalt acid lithium number lithium ion battery that high/low temperature is taken into account.
To achieve the above object, the technical solution adopted by the present invention is as follows:
A kind of cobalt acid lithium number lithium ion battery that high/low temperature is taken into account, including lithium cobaltate cathode, gram volume >=355mAh/g
Artificial plumbago negative pole and nonaqueous electrolytic solution, the lithium cobaltate cathode is by being mixed with processing；The nonaqueous electrolytic solution
To be dissolved in containing the organic compound in cyclic carbonate and linear carbonate solvent, the organic compound is in sulfonic acid
Ester compounds and more nitrile compounds, the mass fraction that the sultone compounds account for electrolyte is 3.0%~10%.
Further, the chemical formula of the lithium cobaltate cathode is LixCo1-yMeyO2, wherein 0.95≤x≤1.05,0 <
Y≤0.1, Me=Mz1Nz2, wherein 0 < z1+z2≤1, M and N element are in Al, Mg, Ti, Zr, Co, Ni, Mn, Y, La or Sr
It is one or more.
The beneficial effect of the present invention compared with the existing technology is: the present invention provides a kind of stable structure, high temperature performance
Excellent lithium cobaltate cathode material, a kind of dynamic performance are good and circulation expands lesser negative electrode material and high-temperature behavior is excellent
Electrolyte.Since positive and negative pole material acts synergistically, the sulfonates compounds of the high-content in electrolyte form low in cathode
The SEI film of impedance, while the sulfonates compounds of high-content will not be oxidized on positive electrode surface, therefore, high-content sulphur
Acid esters compound electrolyte will not influence the performance of positive and negative pole material performance, so that lithium ion battery has very excellent high temperature
Performance and cryogenic property.
Specific embodiment
Below with reference to embodiment, further description of the technical solution of the present invention, and however, it is not limited to this, all right
Technical solution of the present invention is modified or replaced equivalently, and without departing from the spirit and scope of the technical solution of the present invention, should all be contained
Lid is within the protection scope of the present invention.
Specific embodiment 1: present embodiment record is a kind of cobalt acid lithium number lithium-ion electric that high/low temperature is taken into account
Pond, including lithium cobaltate cathode, gram volume >=355mAh/g artificial plumbago negative pole and nonaqueous electrolytic solution, the lithium cobaltate cathode
By being mixed with processing；The nonaqueous electrolytic solution is to be dissolved in containing having in cyclic carbonate and linear carbonate solvent
Machine compound, the organic compound are sultone compounds and more nitrile compounds, the sultone compounds
The mass fraction for accounting for electrolyte is 3.0%~10%.The lithium cobaltate cathode is mixed with processing specifically: first 1000
~1100 DEG C of high temperature dopant sintering processes, after by 800~1000 DEG C secondary high-temperature coating decoration processing synthesis obtain.
Research shows that lithium ion battery can be significantly improved when sultone compounds content is higher than 3% in electrolyte
High-temperature storage performance and high temperature cyclic performance.But its SEI impedance ratio formed in cathode is larger, while sultone compounds
It can be oxidized on lithium cobaltate cathode surface, further increase the impedance behavior of lithium ion battery.
Specific embodiment 2: a kind of cobalt acid lithium number lithium-ion electric that high/low temperature is taken into account described in specific embodiment one
Pond, more nitrile compounds be succinonitrile, adiponitrile, 1, one of 3,6- hexane, three nitrile, glutaronitrile or hexamethylene dicyanide or
A variety of mixing.More nitrile compounds can form protective film on lithium cobaltate cathode surface, relatively significantly improve lithium-ion electric
The high-temperature behavior in pond.
Specific embodiment 3: a kind of cobalt acid lithium number lithium-ion electric that high/low temperature is taken into account described in specific embodiment one
Pond, the mass fraction that more nitrile compounds account for electrolyte is 0.1%~10%.
Specific embodiment 4: a kind of cobalt acid lithium number lithium-ion electric that high/low temperature is taken into account described in specific embodiment three
Pond, the mass fraction that more nitrile compounds account for electrolyte is 1%~5%.
Specific embodiment 5: a kind of cobalt acid lithium number lithium-ion electric that high/low temperature is taken into account described in specific embodiment one
Pond, the sultone compounds are 1,3-propane sultone, Isosorbide-5-Nitrae-butyl sultone or 1, in 3- propene sultone
One or more mixing.
Specific embodiment 6: a kind of cobalt acid lithium number lithium-ion electric that high/low temperature is taken into account described in specific embodiment one
Pond, the mass fraction that the sultone compounds account for electrolyte is 3.1%~6%.
Specific embodiment 7: a kind of cobalt acid lithium number lithium-ion electric that high/low temperature is taken into account described in specific embodiment one
Pond, the artificial plumbago negative pole are the material that second particle is mixed with individual particle, and degree of graphitization is 92.5%~95%.
Specific embodiment 8: a kind of cobalt acid lithium number lithium-ion electric that high/low temperature is taken into account described in specific embodiment seven
Pond, material specific surface area (BET)≤2m that the second particle is mixed with individual particle2/g。
Specific embodiment 9: a kind of cobalt acid lithium number lithium-ion electric that high/low temperature is taken into account described in specific embodiment seven
Pond, the material that the second particle is mixed with individual particle, mixed average grain diameter D50 are 10~16 μm.
It can be very good the capacity and kinetics of balancing material using the artificial graphite of the partial size between D50-10-16
Can, guarantee to meet enough charge-discharge magnification requirements while cathode high capacity.BET is controlled in 2m2It is mainly controlled within/g
Material surface modification, reduces the side reaction of cathode and electrolyte.
Specific embodiment 10: a kind of cobalt acid lithium number lithium-ion electric that high/low temperature is taken into account described in specific embodiment seven
Pond, the material that the second particle is mixed with individual particle, second particle are that single graphite particle passes through pitch higher than 500
Heat treatment bonding is formed under conditions of DEG C, and raw material is needle coke.
A kind of specific embodiment 11: cobalt acid lithium number lithium ion that high/low temperature is taken into account described in specific embodiment seven
Battery, the material that the second particle is mixed with individual particle, individual particle pass through graphite using needle coke or petroleum coke as raw material
Change processing is made.
A kind of specific embodiment 12: cobalt acid lithium number lithium ion that high/low temperature is taken into account described in specific embodiment seven
Battery, the material that the second particle is mixed with individual particle, the mass mixing ratio of second particle are 20%~80%, can be protected
Demonstrate,prove good dynamic performance and lower circulation expansion characteristics.
There is high capacity graphite cathode material provided by the present invention good dynamic performance and lower circulation to expand
Characteristic, high temperature performance are excellent；The impedance for the SEI film that high-content sulfonates compounds are formed on its surface in electrolyte simultaneously
Also very small, it can prevent the sulfonates compounds of high-content from deteriorating the cryogenic property of battery.
A kind of specific embodiment 13: cobalt acid lithium number lithium ion that high/low temperature is taken into account described in specific embodiment one
Battery, the chemical formula of the lithium cobaltate cathode are LixCo1-yMeyO2, wherein 0.95≤x≤1.05,0 < y≤0.1, Me=
Mz1Nz2, wherein 0 < z1+z2≤1, M and N element are one of Al, Mg, Ti, Zr, Co, Ni, Mn, Y, La or Sr or more
Kind.
Specific embodiment 14: a kind of cobalt acid lithium number lithium that high/low temperature is taken into account described in specific embodiment 13 from
Sub- battery, 0 < y≤0.05,0 < z1≤0.5,0 z2≤0.5 <.
A kind of specific embodiment 15: cobalt acid lithium number that high/low temperature is taken into account described in specific embodiment 13 or 14
Code lithium ion battery, the cobalt acid lithium material are LiCo0.985Al0.009Mg0.004Ti0.002O2、LiCo0.9915Al0.004Mg0.002
Ti0.0015O2And LiCo0.995Al0.003Mg0.001Ti0.001O2One of.
The cobalt acid lithium material of the present invention being mixed with is assembled into button cell charge/discharge capacity 0.1C electric discharge and holds
Amount is 182~195mAh/g (3.0~4.5V), the full battery electric discharge 0.2C capacity formed with electrolyte of the invention and cathode
Performance is 169~195mAh/g (charge cutoff voltage is 4.4~4.5V).Lithium cobaltate cathode material structure provided by the present invention
To stablize, high temperature performance is good, while being able to suppress high-content sulfonates compounds in electrolyte and aoxidizing on its surface, into
The impedance of one step reduction battery.
Embodiment 1
(1) preparation of electrolyte: in water content < 10ppm argon atmosphere glove box, by ethylene carbonate (EC), carbon
Diethyl phthalate (DEC), propene carbonate (PC) according to 30:65:5 mass ratio after mixing, obtain nonaqueous solvents, then press
Electrolyte gross mass calculate inside mixed liquor add 4% 1,3-propane sultone, 2% dintrile and 13% hexafluoro phosphorus
Sour lithium, obtains electrolyte.
(2) preparation of positive plate: cobalt acid lithium (the molecular formula LiCo after positive active material is mixed with0.985
Al0.009Mg0.004Ti0.002O2), conductive agent acetylene black, binder polyvinylidene fluoride (PVDF) by 96:2:2 mass ratio in N-
It is thoroughly mixed in methyl pyrrolidone (NMP) solvent, forms it into uniform anode sizing agent, this slurry is coated on anode
On collector Al foil, drying, cold pressing obtain positive plate.The drying and cold pressing is prior art.The anode sizing agent
The normal ranges that solid content uses this field to use.
(3) preparation of negative electrode tab: by negative electrode active material artificial graphite (partial size D50:13 ± 1 μm, degree of graphitization 94 ±
0.5%, second particle is mixed with individual particle, wherein second particle quality accounting 50%), conductive agent acetylene black, binder butylbenzene
Rubber (SBR), thickener sodium carboxymethylcellulose (CMC) sufficiently stir in deionized water solvent according to the mass ratio of 95:2:2:1
Mixing is mixed, uniform negative electrode slurry is formed it into, this slurry is coated on negative current collector Cu foil, drying, cold pressing are born
Pole piece.The drying and cold pressing is prior art.The conventional model that the solid content of the negative electrode slurry uses this field to use
It encloses.
(4) isolation film: using PE porous polymer film as isolation film.
(5) preparation of lithium ion battery: positive plate, isolation film, negative electrode tab are folded in order, and isolation film is made to be in positive and negative
Play the role of isolation between pole piece, then winding obtains naked battery core, and naked battery core is placed in outer packing foil, is prepared above-mentioned
Electrolyte be injected into it is dry after battery in, arrive lithium-ion electric by processes such as Vacuum Package, standing, chemical conversion, shapings
Pond.The processes such as Vacuum Package, standing, chemical conversion, the shaping are prior art.
Embodiment 2
The present embodiment is unlike the first embodiment: the preparation of electrolyte is calculated inside mixed liquor by electrolyte gross mass
Add 5% 1,3-propane sultone, 1% succinonitrile and 13% lithium hexafluoro phosphate, obtain electrolyte.
Embodiment 3
The present embodiment is unlike the first embodiment: the preparation of electrolyte is calculated inside mixed liquor by electrolyte gross mass
Add 3.1% 1,3-propane sultone, the 1 of 0.5%, 3,6- hexane, three nitrile, 1% hexamethylene dicyanide and 13% lithium hexafluoro phosphate,
Obtain electrolyte.
Embodiment 4
The present embodiment is unlike the first embodiment: the preparation of electrolyte is calculated inside mixed liquor by electrolyte gross mass
Add 4% 1,3-propane sultone, 0.5% Isosorbide-5-Nitrae-butyl sultone, 2% dintrile and 13% lithium hexafluoro phosphate, obtain
To electrolyte.
Embodiment 5
The present embodiment is unlike the first embodiment: the preparation of electrolyte is calculated inside mixed liquor by electrolyte gross mass
Add 5% 1,3-propane sultone, 0.5% 1,3- propene sultone, 2% dintrile, 0.5% succinonitrile and
13% lithium hexafluoro phosphate, obtains electrolyte.
Embodiment 6
The present embodiment is unlike the first embodiment: the preparation of electrolyte is calculated inside mixed liquor by electrolyte gross mass
Addition 6% 1,3-propane sultone, 2% dintrile, 0.5% succinonitrile and 13% lithium hexafluoro phosphate, be electrolysed
Liquid.
Embodiment 7
The present embodiment is unlike the first embodiment: the preparation of electrolyte is calculated inside mixed liquor by electrolyte gross mass
Addition 4% 1,3-propane sultone, 2% dintrile, 2% succinonitrile and 13% lithium hexafluoro phosphate, obtain electrolyte.
Embodiment 8
The present embodiment is unlike the first embodiment: the preparation of electrolyte is calculated inside mixed liquor by electrolyte gross mass
1,3-propane sultone, 2% dintrile, 2% succinonitrile, 1% hexamethylene dicyanide and 13% hexafluorophosphoric acid of addition 3.5%
Lithium obtains electrolyte.
Embodiment 9
The present embodiment is unlike the first embodiment: the preparation of positive plate: positive electrode active materials cobalt acid lithium molecular formula is Li
Co0.9915Al0.004Mg0.002Ti0.0015O2。
Embodiment 10
The present embodiment is unlike the first embodiment: the preparation of positive plate: positive electrode active materials cobalt acid lithium is LiCo0.995
Al0.003Mg0.001Ti0.001O2。
Embodiment 11
The present embodiment is unlike the first embodiment: the preparation of negative electrode tab: negative electrode active material is artificial graphite (partial size
D50:14 ± 1 μm, 94 ± 0.5% second particle of degree of graphitization are mixed with individual particle, and wherein second particle accounts for mass ratio 60%).
Embodiment 12
The present embodiment is unlike the first embodiment: the preparation of negative electrode tab: negative electrode active material is artificial graphite (partial size
D50:13 ± 1 μm, 94 ± 0.5% second particle of degree of graphitization are mixed with individual particle, and wherein second particle accounts for mass ratio 40%).
Comparative example 1
This comparative example is unlike the first embodiment: the preparation of electrolyte is calculated inside mixed liquor by electrolyte gross mass
Addition 2% 1,3-propane sultone, 2% dintrile and 13% lithium hexafluoro phosphate, obtain electrolyte.
Comparative example 2
This comparative example is unlike the first embodiment: the preparation of electrolyte is calculated inside mixed liquor by electrolyte gross mass
4% 1,3-propane sultone and 13% lithium hexafluoro phosphate are added, electrolyte is obtained.
Comparative example 3
This comparative example is unlike the first embodiment: the preparation of positive plate: positive electrode active materials are without being mixed with
Active material cobalt acid lithium.
Comparative example 4
This comparative example is unlike the first embodiment: the preparation of negative electrode tab: negative electrode active material is artificial graphite (partial size
D50:13 ± 1 μm, the pure second particle of degree of graphitization 94 ± 0.5%).
Comparative example 5
This comparative example is unlike the first embodiment: the preparation of negative electrode tab: negative electrode active material is artificial graphite (partial size
D50:18 ± 1 μm, the pure second particle of degree of graphitization 94 ± 0.5%), BET:2.8.
- 10 DEG C of low temperature discharge experiments:
By embodiment 1~12 and 1~5 gained battery of comparative example at room temperature with the charge-discharge magnification of 1C, 3.0V~4.5V
Charge and discharge blanking voltage carry out the test of 5 charge and discharge cycles, then 1C multiplying power is charged to full power state.1C capacity is recorded respectively
Q1.The battery of full power state is stood into 4h at -10 DEG C, multiplying power of the battery at -10 DEG C with 0.4C is then put into 3.0V, is recorded
Capacity retention ratio is calculated in discharge capacity Q, records result such as table 1.
The calculation formula wherein used is as follows:
- 20 DEG C of low temperature discharge experiments:
By embodiment 1~12 and 1~5 gained battery of comparative example at room temperature with the charge-discharge magnification of 1C, 3.0V~4.5V
Charge and discharge blanking voltage carry out the test of 5 charge and discharge cycles, then 1C multiplying power is charged to full power state.1C capacity is recorded respectively
Q1.The battery of full power state is stood into 4h at -20 DEG C, multiplying power of the battery at -20 DEG C with 0.25C is then put into 3.0V, is remembered
Capacity retention ratio is calculated in recording playback capacitance Q, records result such as table 1.
The calculation formula wherein used is as follows:
- 30 DEG C of low temperature discharge experiments:
By embodiment 1~12 and 1~5 gained battery of comparative example at room temperature with the charge-discharge magnification of 1C, 3.0V~4.5V
Charge and discharge blanking voltage carry out the test of 5 charge and discharge cycles, then 1C multiplying power is charged to full power state.1C capacity is recorded respectively
Q1.The battery of full power state is stood into 4h at -30 DEG C, multiplying power of the battery at -30 DEG C with 0.15C is then put into 3.0V, is remembered
Capacity retention ratio is calculated in recording playback capacitance Q, records result such as table 1.
The calculation formula wherein used is as follows:
45 DEG C of loop tests:
By embodiment 1~12 and 1~5 gained battery of comparative example at 45 DEG C with the charge-discharge magnification of 1C/1C, 3.0V~
The charge and discharge blanking voltage of 4.5V carries out charge and discharge cycles 500 times, the electric discharge for recording cyclic discharge capacity and recycling divided by the 1st time
Capacity is to get capacity retention ratio, and cell thickness is divided by cell thickness before recycling to get thickness change, record after record recycles
As a result such as table 1.
The comparison of 1 embodiment and comparative example experimental result of table
As can be seen from Table 1: obviously being changed using the storage of the lithium ion battery of electrolyte of the present invention and cycle performance
It is kind.The above embodiment is a preferred embodiment of the present invention, but embodiment of the present invention are not limited by the above embodiments,
It is other it is any without departing from the spirit and principles of the present invention made by change, modification, substitution, combination and simplify, should all
For equivalent substitute mode, it is included within the scope of the present invention.
Claims (15)
1. a kind of cobalt acid lithium number lithium ion battery that high/low temperature is taken into account, it is characterised in that: the lithium ion battery includes cobalt
Sour lithium anode, gram volume >=355mAh/g artificial plumbago negative pole and nonaqueous electrolytic solution, the lithium cobaltate cathode is through overdoping
Cladding processing；The nonaqueous electrolytic solution is to be dissolved in the organic compound containing in cyclic carbonate and linear carbonate solvent
Object, the organic compound are sultone compounds and more nitrile compounds, and the sultone compounds account for electrolysis
The mass fraction of liquid is 3.0%~10%.
2. the cobalt acid lithium number lithium ion battery that a kind of high/low temperature according to claim 1 is taken into account, it is characterised in that: described
More nitrile compounds be succinonitrile, adiponitrile, 1, one of 3,6- hexane, three nitrile, glutaronitrile or hexamethylene dicyanide or a variety of mixed
It closes.
3. the cobalt acid lithium number lithium ion battery that a kind of high/low temperature according to claim 1 is taken into account, it is characterised in that: described
More nitrile compounds account for electrolyte mass fraction be 0.1%~10%.
4. the cobalt acid lithium number lithium ion battery that a kind of high/low temperature according to claim 3 is taken into account, it is characterised in that: described
More nitrile compounds account for electrolyte mass fraction be 1%~5%.
5. the cobalt acid lithium number lithium ion battery that a kind of high/low temperature according to claim 1 is taken into account, it is characterised in that: described
Sultone compounds be 1,3-propane sultone, Isosorbide-5-Nitrae-butyl sultone or 1, one of 3- propene sultone or more
The mixing of kind.
6. the cobalt acid lithium number lithium ion battery that a kind of high/low temperature according to claim 1 is taken into account, it is characterised in that: described
Sultone compounds account for electrolyte mass fraction be 3.1%~6%.
7. the cobalt acid lithium number lithium ion battery that a kind of high/low temperature according to claim 1 is taken into account, it is characterised in that: described
Artificial plumbago negative pole be the material that is mixed with individual particle of second particle, degree of graphitization is 92.5%~95%.
8. the cobalt acid lithium number lithium ion battery that a kind of high/low temperature according to claim 7 is taken into account, it is characterised in that: described
Material specific surface area≤2m for being mixed with individual particle of second particle2/g。
9. the cobalt acid lithium number lithium ion battery that a kind of high/low temperature according to claim 7 is taken into account, it is characterised in that: described
The material that is mixed with individual particle of second particle, mixed average grain diameter D50 is 10~16 μm.
10. the cobalt acid lithium number lithium ion battery that a kind of high/low temperature according to claim 7 is taken into account, it is characterised in that: institute
The material that the second particle stated is mixed with individual particle, second particle are that single graphite particle passes through pitch higher than 500 DEG C
Under the conditions of heat treatment bonding formed, raw material is needle coke.
11. the cobalt acid lithium number lithium ion battery that a kind of high/low temperature according to claim 7 is taken into account, it is characterised in that: institute
The material that the second particle stated is mixed with individual particle, individual particle pass through graphitization processing system using needle coke or petroleum coke as raw material
At.
12. the cobalt acid lithium number lithium ion battery that a kind of high/low temperature according to claim 7 is taken into account, it is characterised in that: institute
The material that the second particle stated is mixed with individual particle, the mass mixing ratio of second particle are 20%~80%.
13. the cobalt acid lithium number lithium ion battery that a kind of high/low temperature according to claim 1 is taken into account, it is characterised in that: institute
The chemical formula for the lithium cobaltate cathode stated is LixCo1-yMeyO2, wherein 0.95≤x≤1.05,0 < y≤0.1, Me=Mz1Nz2,
In, 0 < z1+z2≤1, M and N element are one of Al, Mg, Ti, Zr, Co, Ni, Mn, Y, La or Sr or a variety of.
14. the cobalt acid lithium number lithium ion battery that a kind of high/low temperature according to claim 13 is taken into account, it is characterised in that: 0
< y≤0.05,0 < z1≤0.5,0 z2≤0.5 <.
15. a kind of cobalt acid lithium number lithium ion battery that high/low temperature is taken into account, feature described in 3 or 14 exist according to claim 1
In: the cobalt acid lithium material is LiCo0.985Al0.009Mg0.004Ti0.002O2、LiCo0.9915Al0.004Mg0.002Ti0.0015 O2With
LiCo0.995Al0.003Mg0.001Ti0.001O2One of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910277718.8A CN109935891B (en) | 2019-04-08 | 2019-04-08 | Lithium cobaltate digital lithium ion battery with high and low temperature consideration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910277718.8A CN109935891B (en) | 2019-04-08 | 2019-04-08 | Lithium cobaltate digital lithium ion battery with high and low temperature consideration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109935891A true CN109935891A (en) | 2019-06-25 |
| CN109935891B CN109935891B (en) | 2021-10-29 |
Family
ID=66989458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910277718.8A Active CN109935891B (en) | 2019-04-08 | 2019-04-08 | Lithium cobaltate digital lithium ion battery with high and low temperature consideration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109935891B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112467209A (en) * | 2019-09-09 | 2021-03-09 | 珠海冠宇电池股份有限公司 | High-voltage lithium ion battery with high and low temperature performance |
| CN114566710A (en) * | 2022-02-23 | 2022-05-31 | 珠海市赛纬电子材料股份有限公司 | Lithium ion battery non-aqueous electrolyte for quick charging and lithium ion battery |
| WO2023184071A1 (en) * | 2022-03-28 | 2023-10-05 | 宁德新能源科技有限公司 | Electrochemical device, and electronic device comprising same |
| JP7475768B2 (ja) | 2020-07-07 | 2024-04-30 | エルジー エナジー ソリューション リミテッド | 負極及び前記負極を含む二次電池 |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101305484A (en) * | 2005-12-20 | 2008-11-12 | 松下电器产业株式会社 | Nonaqueous electrolyte secondary battery |
| CN102779976A (en) * | 2011-10-10 | 2012-11-14 | 北大先行科技产业有限公司 | Preparation method of cathode material of LCO (lithium cobaltate)-based lithium ion battery |
| CN103325991A (en) * | 2013-05-31 | 2013-09-25 | 余玉英 | Total temperature-range lithium ion battery |
| CN104241627A (en) * | 2014-09-11 | 2014-12-24 | 北大先行科技产业有限公司 | Lithium cobaltate for positive electrode of lithium ion battery and preparation method of lithium cobaltate for positive electrode of lithium ion battery |
| CN104659366A (en) * | 2014-12-30 | 2015-05-27 | 东莞市凯金新能源科技有限公司 | Preparation method of anode material for power lithium ion battery |
| US20160006077A1 (en) * | 2012-02-29 | 2016-01-07 | Shin-Kobe Electric Machinery Co., Ltd. | Lithium Ion Battery |
| CN107871854A (en) * | 2016-09-27 | 2018-04-03 | 宁波杉杉新材料科技有限公司 | A kind of preparation method of graphite negative material of lithium ion battery second particle |
| CN109346772A (en) * | 2018-09-26 | 2019-02-15 | 东莞市杉杉电池材料有限公司 | A kind of non-aqueous electrolyte for lithium ion cell and lithium ion battery |
-
2019
- 2019-04-08 CN CN201910277718.8A patent/CN109935891B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101305484A (en) * | 2005-12-20 | 2008-11-12 | 松下电器产业株式会社 | Nonaqueous electrolyte secondary battery |
| CN102779976A (en) * | 2011-10-10 | 2012-11-14 | 北大先行科技产业有限公司 | Preparation method of cathode material of LCO (lithium cobaltate)-based lithium ion battery |
| US20160006077A1 (en) * | 2012-02-29 | 2016-01-07 | Shin-Kobe Electric Machinery Co., Ltd. | Lithium Ion Battery |
| CN103325991A (en) * | 2013-05-31 | 2013-09-25 | 余玉英 | Total temperature-range lithium ion battery |
| CN104241627A (en) * | 2014-09-11 | 2014-12-24 | 北大先行科技产业有限公司 | Lithium cobaltate for positive electrode of lithium ion battery and preparation method of lithium cobaltate for positive electrode of lithium ion battery |
| CN104659366A (en) * | 2014-12-30 | 2015-05-27 | 东莞市凯金新能源科技有限公司 | Preparation method of anode material for power lithium ion battery |
| CN107871854A (en) * | 2016-09-27 | 2018-04-03 | 宁波杉杉新材料科技有限公司 | A kind of preparation method of graphite negative material of lithium ion battery second particle |
| CN109346772A (en) * | 2018-09-26 | 2019-02-15 | 东莞市杉杉电池材料有限公司 | A kind of non-aqueous electrolyte for lithium ion cell and lithium ion battery |
Non-Patent Citations (2)
| Title |
|---|
| ZELI WU等: "The Roles of Sulfur-Containing Additives and TheirWorking", 《JOURNAL OF THE ELECTROCHEMICAL SOCIETY》 * |
| 容亮斌等: "⽯石墨墨形貌对锂离⼦子电池倍率性能的影响", 《电池》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112467209A (en) * | 2019-09-09 | 2021-03-09 | 珠海冠宇电池股份有限公司 | High-voltage lithium ion battery with high and low temperature performance |
| JP7475768B2 (ja) | 2020-07-07 | 2024-04-30 | エルジー エナジー ソリューション リミテッド | 負極及び前記負極を含む二次電池 |
| CN114566710A (en) * | 2022-02-23 | 2022-05-31 | 珠海市赛纬电子材料股份有限公司 | Lithium ion battery non-aqueous electrolyte for quick charging and lithium ion battery |
| WO2023184071A1 (en) * | 2022-03-28 | 2023-10-05 | 宁德新能源科技有限公司 | Electrochemical device, and electronic device comprising same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109935891B (en) | 2021-10-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105591158B (en) | A kind of tertiary cathode material lithium ion battery and its electrolyte | |
| KR101546251B1 (en) | Electrolyte for electrochemical device and the electrochemical device thereof | |
| CN108963340A (en) | A kind of high pressure resistant lithium ion battery and its electrolyte | |
| CN107579280B (en) | The lithium secondary cell electrolyte and lithium secondary battery of the ester of silicon substrate containing cyclic disulfonic acid | |
| CN109361018B (en) | Electrolyte solution and electrochemical device | |
| CN102637903A (en) | Formation method of lithium ion battery | |
| CN112635835B (en) | High-low temperature compatible non-aqueous electrolyte and lithium ion battery | |
| CN110212247B (en) | Battery cell | |
| KR102612376B1 (en) | Electrolytes, electrochemical devices and electronic devices | |
| CN108987804B (en) | Application of nitrile compound containing siloxane group in battery electrolyte | |
| CN112467209A (en) | High-voltage lithium ion battery with high and low temperature performance | |
| CN112768770A (en) | Electrolyte and lithium ion battery containing same | |
| CN109935891A (en) | A kind of cobalt acid lithium number lithium ion battery that high/low temperature is taken into account | |
| CN113437257A (en) | Lithium metal negative pole piece, electrochemical device and electronic equipment | |
| CN110797574A (en) | Non-aqueous electrolyte for lithium ion battery and lithium ion battery thereof | |
| CN111697267A (en) | Electrolyte solution, electrochemical device containing electrolyte solution, and electronic device | |
| CN108417894A (en) | A kind of lithium secondary cell electrolyte and lithium secondary battery | |
| CN112103561B (en) | Electrolyte and electrochemical device | |
| CN112956063A (en) | Electrolyte solution, and electrochemical device and electronic device comprising same | |
| CN111740162A (en) | Electrolyte solution, electrochemical device including the same, and electronic device | |
| CN112310478B (en) | Electrolyte and electrochemical device thereof | |
| CN109950612A (en) | A kind of nonaqueous electrolytic solution and lithium ion battery | |
| CN114373987B (en) | Electrolyte, electrochemical device, and electronic device | |
| CN117219837B (en) | Sodium secondary battery and electricity utilization device | |
| CN114287078B (en) | Electrolyte and electrochemical device and electronic device including the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 519180 No. 209 Pearl Peak Avenue, Jingan Town, Doumen District, Zhuhai City, Guangdong Province Applicant after: Zhuhai Guanyu Battery Co., Ltd Address before: 519180 No. 209 Pearl Peak Avenue, Jingan Town, Doumen District, Zhuhai City, Guangdong Province Applicant before: ZHUHAI COSLIGHT BATTERY Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |